The I-Beam Micro System has the widest range of fore and aft adjustment.

Top Features of the SDG I-Beam Micro Aluminium Seat Post

Lightweight & strong

Widest range of fore-aft adjustment

Single access bolt for quick & easy installation

6061 Cold forged head & clamp anodized black

2014 Black hard anodized smooth finish post

Laser Etched Logos

Height adjustment scale printed on front of post

Sizes: 27.2, 30.0, 30.9, 31.6mm

Straight

Weight: 220g

Product Data

MTB:

Yes

Weight (g):

220

Road:

Yes

The I-Beam System uses a single, easy-access 5mm bolt for quick and simple adjustments or saddle changes. New micro head design allows precise angle adjustment.

About Seat Posts

A good quality seat post will save weight and hold your saddle securely. Seatposts are made in various materials, alloy and carbon being the two most common, alloy posts are lightweight, durable and cost efficient, while carbon posts are the popular choice for top end machines. Seat posts vary in where they hold the saddle relative to their own centre line so make sure you have enough adjustment on your saddle rails to allow for this or you could end up with your saddle too far forwards. A seat post needs to fit your frame exactly and are measured by as little as 0.2mm. When choosing a new one, either read off the measurement from your old seat post or measure it carefully with a vernier calliper. Make sure you lubricate the frame (unless they're carbon fibre) before insertion or you'll struggle to get it out again.

About the SDG brand

Jerome’s first product was a seat made specifically for mountain bikers, replacing the delicate leather used by traditional European seat makers with a super-tough and light weight material known as “Kevlar”. Operating from a small factory in Southern California (a place they still call home), S.D.G. crafted unique, high-quality seats by hand, slowly carving out a niche among the mountain bike cognoscenti. During the mid 1990’s S.D.G. introduced some of the best-loved, lightest weight saddles, featuring super-light foams, and distinctively stitched covers. Many have become “classics”, and some, like the Bel Air, Satellite and Slim Jim, are still in production. By the end of the ‘90’s S.D.G. seats were standard equipment on most top-shelf mountain bikes.

Delivery Information

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free with saddle purchase
I received this post free when i purchase a`saddle the great thing about the I-beam system is that it is just a allen key to adjust all aspects of the seat position quick and easily
03 July 2010

SDG I-Beam Micro Aluminium Seat Post
I had to buy this because I received a present of an SDG saddle which only fitted thier new seat post. Overall I would not reccomend this yet. The saddle plus this post seem a bit stiff to me compared with the normal bar design. It remains to be seen whether this will settle in to give me a softer ride in the future. Also it was difficult to adjust the angle and position of the saddle compared with a normal seatpost.
20 January 2012

Be Aware: need saddle
i bought this as it is 400mm and £22. however i did not know that it would not work with normal saddles and you had to buy a SDG saddle £40.
i am sure this is a good product but i would not buy as why would i need another saddle?
13 January 2012

It's a good seat post!
My seat post that originally came on my mountain bike broke because of the cheap part at the top where the seat connects.
I bought this i-beam seat post along with an i-beam saddle from a different site for a change from the normal rail locking system used on saddles, the clamp at the top holds a single beam that is attached to an i-beam saddle.
The seat post itself is of very good quality, its glossy black with measurements down the side so you know what height to put it at, it fits my bike perfectly and is longer than my original so will be more secure. The clamp at the top is easy to use and secures the seat with one bolt, the micro element of this seat post allows you to rotate the clamp through a semi circle shape so you can have your saddle parallel to the ground or pointing slightly down to however you desire, making minor adjustments to suit you.
So far i took it on the winlatter forest trail and the 23 mile red route at dalby forest, it hasn't budged and feels solid. I would definitley recommend this product.
06 March 2011

I have a road bike I want to use for time trials and would like a forward angled seat post, would this seat post be suitable and would it fit my bike. Its an old Trek US postal service carbon fibre frame.Many thanks

Answers

Top 10 Contributor

Answer:

This can be used as a forward offset post with an I-beam saddle, as long as the saddle clamp can be adjusted to the angle required. If the diameters of the seatpost match the old seatpost it will fit your frame ok.